Experimental investigation on the dynamic mechanical properties of soft magnetic entangled metallic wire material

This work describes the dynamic characteristics of a novel soft magnetic entangled metallic wire material(SM-EMWM) by the dynamic tests for the first time. The mechanical properties of three batches of SM-EMWMs with different porosities have been investigated under different dynamic loads in different magnetic field intensities. The result shows that its properties (storage modulus and loss factor) have commendably controllable magnetic responses in the magnetic field. In particular, the dynamic damping is more remarkable than its quasi-static performance, and the loss factor can be improved above 50% in the magnetic field of 500 mT. The results indicate that SM-EMWM as a magneto-sensitive smart material possesses a considerable application prospect for the active vibration control with variable stiffness and damping. (paper)